VOLCANICLASTIC SEDIMENTATION IN AND AROUND AN ORDOVICIAN SUBAQUEOUS CALDERA, LOWER RHYOLITIC TUFF FORMATION, NORTH WALES

被引：0
|
作者：
FRITZ, WJ [1 ]
HOWELLS, MF [1 ]
REEDMAN, AJ [1 ]
CAMPBELL, SDG [1 ]
机构：
[1] BRITISH GEOL SURVEY,ABERYSTWYTH SY23 4BY,DYFED,WALES
来源：
GEOLOGICAL SOCIETY OF AMERICA BULLETIN | 1990年 / 102卷 / 09期
关键词：
Geology;
D O I：
10.1130/0016-7606(1990)102<1246:VSIAAA>2.3.CO;2
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
The Lower Rhyolitic Tuff Formation of Ordovician age in North Wales records the collapse, infilling, and subsequent resurgence of a volcanic caldera with an original diameter of about 15km. This volcanic center controlled patterns of volcaniclastic sedimentation, providing enough topographic relief for both a shallow-lagoon depositional basin within the caldera and a source of sediment derived from the rim. -from Authors
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页码：1246 / 1256
页数：11
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